Improvement in lamp-stoves



2 Sheets--Sheet1. F. JAN K.E. Lamp-Stoves.

Patented Feb- 18, 1873.

AM. P/wmumosRAPr/Icca.uflassanuzmacass) UNIT D S ATES PATENT OFFICE.

FRANZ J AXKE, OF BRUNN, AUSTROHUNGARIAN MONARCHY.

IMPROVEMENT IN LAMP-STOVES. Y

Specification forming part of Letters Patent No. 136,063, dated February16, 1873.

To all whom it may concern;

Be it known that I, FRANZ JANKE, imperial and royal engineer, of Briinn,Moravia, in the Austro-Hungarian Monarchy, have invented certain new anduseful Improvements in Inodorous Heating, Cooking, and LightingApparatus, of which the following is a specification:

My invention relates to an apparatus for heating, cooking, and lightingwith petroleum o1 Hitherto the obnoxious smell and smoke from coal-oilhas been the only objection to the general use of petroleum-lamps, andas this oil is the cheapest and safest burningfluid it is of greatimportance to utilize'it for heating and cooking by obviating theoffensive odor and smoke therefrom. This my invention accomplishes; andit consists of a heating and cooking apparatus, in which the chimneyprojects therein and has certain relations with the apparatus which areessential to its proper action. These are a certain height of chimney; acertain space between its top and the bottom of the culinary vessel, andequal always to the diameter of the chimney-top and with these, equalarea of the escape-opening, and of those in the interior partitions withthe top of the chimney. This arrangement and relation of parts I havefound to produce the desired results of consumin g the gases from theoil so entirely that nothing escapes but inodorons carbon, leaving thekettlebottom unblackened. My improvement also consistsin combining withtheheating-chamber of the apparatus an interior wire or net frame,intervening between the bottom of the cooking-vessel and the top of thelamp-chimney, the object whereof is to retain the heat around thekettle, and serve to absorb and burn out the gases; in the constructionof the heating part of the apparatus; and in mounting it by socket stemsupon a suitable frame; all as will be more fully hereinafter described.

In the accompanying drawing, Figure 1 represents an elevation of anapparatus embracing my invention. Fig. 2 represents a vertical sectionof the same. Fig. 3 represents a horizontal section at the line X X ofFig. 2; and Figs. 4 and 5, views in perspective, showin g slightlydifferent forms of apparatus.

The cooking and heating apparatus consists of a circular heater, A, flaton top, having a diameter of about twenty-four inches, and its underside B made in the form of a section of a globe. Its top and bottomplates are provided with central openings, the former to receive thecooking-vessel, and the latter to re ceive the upper end of thelamp-chimney G. which, for this purpose, is formed into a neck, D, whichsurrounds the chimney without touching it, so as to leave as littlespace as possible to prevent the admission of air. The heating, chamberis divided by a vertical partition, E. into the annular chambers F andG, into the central one of which the cooking-vessel H projects, whilethe outer one is for the free circulation of the heated air, andcommunicates at the side or top thereof with the escape-pipe I, and thetwo chambers communicate with each other by an opening, J, in theinterior vertical partition located diametrically opposite theescape-openings K in a partition, L, so that the heat from the chamber Gmust pass through the openings K to the escape-pipe L. The heatingapparatus thus constructed is provided with three tubes, 11, projectingfrom its under side, which'fit over and upon the upper ends of the frameof the lamp, so that it may easily be removed therefrom. This frame consists of three stems or branches, b, the lower ends of which formsupports for the apparatus and are united to a socket or cup, into whichthe lamp is fitted securely, while their upper ends are braced by atriangularshaped frame, M.

The lamp is constructed with acircular burner, as I have discovered thata cylindrical wick is best adapted for coal-oil, because it produces aconical flame. Any well-constructed lamp will answer the purpose. Thechimney (3, however, must be contracted to form a neck just above theburner, which has the effect of converting a cylindrical into I aconical flame, from three to four inches in height. I have found itnecessary that the chimney should be nine and two-thirds inches inheight, and the distance between its upper end 0 and the bottom of theculinary vessel in no case less than threequarters of an inch, nor morethan an inch and a half, or equal to the diameter of the top of thechimney; and the escape-opening I may be greater, but never of less areathan the latter; and the openings J K in the partitionsE L must be ofequal area with the escape-opening I and top 0 of the chimney.

In order to concentrate and hold the heat around the bottom of thecooking-pot I secure a wire or skeleton frame, N, to the sides of thepartition E, within the central chamber F and between the top 0 of thelamp-chimney and the bottom of the pan or pot without touching either,so as to entirely surround the exposed surface thereof, except justabove the chimney, so that the concentrated heat from the chimney willpass. through the central opening (1 in the wire or net frame N, andstriking the bottom of the cooking-vessel, will be defiected downwardinto the wire-net, and thus the latter will become highly heated andconduct the heat up around the sides of the pot and hold it, so as togreatly increase its intensity, and thus act as a consuming diaphragm,burning up and absorbing any gases that may enter the chamber, so thatnothing escapes but carbonic gas, free from smell and smoke.

The interior of the heater may be divided into a greater number ofchambers, and in proportion to the number of these chambers will be thetemperature of the escaping heat. The opening in the top plate may befitted with insertable rings of varying diameters, and thecooking-vessels provided with flanges so as to fit closely within saidopening.

The apparatus may be converted into a heat in g'stove by securing a drumwithin the central opening of the'top plate; and the wirebasket may beeasily replaced when burnt out.

Having described my invention, I claim- 1. The heating and cookingapparatus of a petroleum-lamp having a chimney, O, of a certainspecified height, extending into the heatingchamber F, with a spacebetween the bot tom of the latter equal to the diameter of thechimney-top 0, and also equal to the area of the openingsl J K, by whicharrangement and relation of these parts the gases and smoke from thelamp are consumed,,as described.

2. The wire netting or basket N, located and arranged within the centralchamber F and above the lampchimney, in the manner and for the purposeherein shown and specified.

' 3. The heating apparatus A B, provided with socket-stems a foradjustment upon the branches 1), braced by the frame M, as and for thepurpose described.

FRANZ J ANKE.

Witnesses:

WM. Ermine, P, SIDNEY Posr.

